To meet the stringent specifications required for LME Grade A cobaltCobalt (Co) cathode productionProductions, cobaltCobalt refineries must reduce impurities such as cadmiumCadmium (Cd) and copperCopper (Cu) to trace levels (< 0.1 mg/L) in the electrolyte. The primary challenge is to selectively remove these impurities without affecting the cobalt electrolyteCobalt electrolyte or causing any loss of valuable cobaltCobalt content. SuperLig®SuperLig molecular recognition technologyTMMolecular recognition technology (MRTTM) provides an innovative solution for impurity removalImpurity removal by selectively targeting specific metalMetals ions while leaving non-target ions unaffected. This study examines the use of MRTTM to selectively remove Cu and Cd from Co electrolytes, where initial concentrations of ~ 410 ppm Cu and ~ 30 ppm Cd were reduced to below detection limits in the Co electrolyte. Two distinct MRTTM systems were utilized: one with SuperLig®SuperLig 132 for Cu removal and the other with SuperLig®SuperLig 177 for Cd removal. These findings highlight the effectiveness of MRTTM in achieving the stringent impurity thresholds required to produce LME Grade A cobaltCobalt cathodes without compromising electrolyte characteristics or productionProductions.